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Related Experiment Videos

Expression of basic fibroblast growth factor in normal human tissues.

C Cordon-Cardo1, I Vlodavsky, A Haimovitz-Friedman

  • 1Department of Pathology, Memorial Sloan-Kettering Cancer Center, New York, New York.

Laboratory Investigation; a Journal of Technical Methods and Pathology
|December 1, 1990
PubMed
Summary
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Basic fibroblast growth factor (bFGF) is widely distributed in human blood vessel basement membranes and certain parenchymal cells. Its role in angiogenesis is suggested, but function in parenchymal cells requires further investigation.

Area of Science:

  • Immunohistochemistry
  • Molecular Biology
  • Cell Biology

Background:

  • Basic fibroblast growth factor (bFGF) is a potent signaling molecule involved in cell growth and differentiation.
  • Understanding the distribution of bFGF in normal human tissues is crucial for elucidating its physiological roles.

Purpose of the Study:

  • To investigate the immunohistochemical distribution of basic fibroblast growth factor (bFGF) in normal human tissues.
  • To characterize the localization patterns and intensity of bFGF expression in various cell types and extracellular compartments.

Main Methods:

  • Immunohistochemistry was performed on fresh frozen sections of normal human tissues.
  • A specific anti-bFGF mouse monoclonal antibody was used for immunodetection.
  • Antibody specificity was confirmed by Western blot analysis and neutralization assays.

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Main Results:

  • bFGF was ubiquitously detected in the basement membranes of all blood vessel sizes, but not in epidermal or epithelial basement membranes.
  • Immunoreactivity patterns varied within the vascular bed, with intense staining in large vessels and heterogeneous expression in capillaries, particularly branching ones.
  • Strong bFGF staining was also observed in cardiac muscle fibers, smooth muscle cells, neurons, Purkinje cells, and epithelial cells of bronchi, colon, endometrium, and sweat gland ducts.

Conclusions:

  • The widespread presence of bFGF in the extracellular compartment of various organs suggests a potential role in angiogenesis.
  • The function of bFGF within parenchymal cells warrants further investigation.